Video: Ray piv txwv yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv geometry, a ray yog ib txoj kab nrog ib qho kawg (los yog taw tes ntawm lub hauv paus chiv keeb) uas txuas mus rau infinitely nyob rau hauv ib qho kev taw qhia. Ib piv txwv ntawm a ray yog lub hnub ray hauv qhov chaw; lub hnub yog qhov kawg, thiab ray ntawm lub teeb txuas ntxiv mus indefinitely.
Cia li xav txog qhov no, hu ua Ray?
Ray . Txhais: Ib feem ntawm ib kab uas pib ntawm ib qho taw tes thiab tawm mus rau hauv ib qho kev taw qhia rau infinity. A ray pib ntawm ib qho taw tes thiab tawm mus rau hauv ib qho kev taw qhia mus ib txhis, mus rau infinity. Qhov chaw nyob qhov twg ray pib yog hu ua (tsis meej pem) qhov kawg.
Kuj Paub, dab tsi yog lub ntsiab lus ntawm lub teeb nyob rau hauv geometry? Ray (Kev sib koom tes Geometry ) Txhais : Ib kab uas pib ntawm ib qho taw tes nrog cov kev sib koom ua ke, thiab tawm mus rau hauv ib qho kev taw qhia tshwj xeeb mus rau infinity, tejzaum nws mus txog qhov thib ob. Sim no Kho lub ray hauv qab no los ntawm dragging ib tug txiv kab ntxwv dot thiab saib yuav ua li cas lub ray AB behaves.
Ib sab saum toj no, dab tsi yog qhov piv txwv ntawm kab ntu?
Piv txwv ntawm kab ntu suav nrog ob sab ntawm daim duab peb sab lossis square. Feem ntau, thaum ob qho tib si ntus Qhov kawg cov ntsiab lus yog vertices ntawm ib tug polygon los yog polyhedron, lub kab ntu yog ib qho ntug (ntawm polygon lossis polyhedron) yog tias lawv nyob ib sab vertices, lossis lwm yam kab pheeb ces kaum.
Dab tsi yog qhov hluav taws xob hauv science?
Txhais. Ib lub teeb ray yog ib txoj kab (ncaj los yog nkhaus) uas yog perpendicular rau lub teeb lub wavefronts; nws tangent yog collinear nrog yoj vector. Teeb rays nyob rau hauv homogeneous media yog ncaj. Lawv khoov ntawm qhov sib cuam tshuam ntawm ob qhov kev tshaj tawm tsis sib xws thiab tej zaum yuav nkhaus hauv qhov nruab nrab uas qhov kev hloov pauv hloov pauv.
Pom zoo:
Yam ua piv txwv piv txwv li cas?
Ib khub xaj yog ib khub ntawm tus lej hauv ib qho kev txiav txim. Piv txwv li, (1, 2) thiab (- 4, 12) raug txiav ua khub. Qhov kev txiav txim ntawm ob tus lej tseem ceeb: (1, 2) tsis sib npaug rau (2, 1) -- (1, 2) ≠ (2, 1)
Dab tsi yog qhov sib piv thiab piv txwv?
Inverse proportion. Inverse proportions tshwm sim thaum ib tus nqi nce thiab qhov txo qis. Piv txwv li, ntau tus neeg ua haujlwm ntawm txoj haujlwm yuav txo lub sijhawm los ua kom tiav cov haujlwm. Lawv yog inversely proportional
Dab tsi yog txhais los ntawm lub sij hawm dissociation thiab dab tsi yog ib qho piv txwv ntawm cov khoom uas dissociates?
Dissociation, nyob rau hauv chemistry, sib cais ntawm ib yam khoom mus rau hauv atoms los yog ions. Thermal dissociation tshwm sim ntawm qhov kub thiab txias. Piv txwv li, hydrogen molecules (H 2) dissociate rau hauv atoms (H) ntawm kub heev; ntawm 5,000 ° K txog 95% ntawm cov molecules hauv cov qauv ntawm hydrogen yog dissociated rau hauv atoms
Dab tsi yog qhov txawv ntawm instantaneous thiab nruab nrab ceev dab tsi yog qhov piv txwv loj tshaj ntawm kev ceev ceev?
Qhov nruab nrab ceev yog qhov ceev nruab nrab ntawm lub sijhawm. Instantaneous ceev yuav yog qhov ceev txhua qhov muab tam sim ntawd hauv lub sijhawm ntawd, ntsuas nrog lub ntsuas ntsuas lub sijhawm
Dab tsi yog qhov txawv ntawm microevolution thiab macroevolution Dab tsi yog qee qhov piv txwv ntawm txhua tus?
Microevolution vs. Macroevolution. Piv txwv ntawm cov kev hloov microevolutionary no yuav suav nrog kev hloov ntawm hom xim lossis loj. Macroevolution, piv txwv li, yog siv los hais txog kev hloov pauv ntawm cov kab mob uas tseem ceeb txaus uas, dhau sijhawm, cov kab mob tshiab yuav raug suav tias yog hom tshiab nkaus xwb